What Does P0172 Mean on Your 2022 Nissan Rogue?
A P0172 code on the 2022 Nissan Rogue indicates the engine control module has detected a rich condition on Bank 1. The 2022 Rogue uses the 1.5L VC-Turbo (Variable Compression Turbo) three-cylinder engine producing 201 horsepower and 225 lb-ft of torque. This inline engine has only one bank, so P0172 affects the entire fuel system.
The VC-Turbo engine is unique in that it varies its compression ratio for performance or efficiency. A rich condition disrupts this system, wasting fuel and potentially causing damage to the catalytic converter.
Common Symptoms You May Notice
- Check engine light illuminated
- Reduced fuel economy
- Rough or surging idle
- Black exhaust smoke
- Fuel odor from the tailpipe
- Hesitation under acceleration
Top Causes of P0172 on the 2022 Rogue
- Contaminated MAF sensor - The mass airflow sensor accumulates dirt and debris over time, underreporting airflow and causing excess fueling.
- Boost or charge pipe leak - The turbocharged engine has intake piping that can develop leaks, causing air loss after the MAF sensor.
- Failing upstream O2 sensor - A degraded oxygen sensor sends incorrect data for fuel trim adjustments.
- EVAP purge valve stuck open - A malfunctioning purge valve sends fuel vapors into the intake manifold continuously.
How to Diagnose the Problem
Scan codes and check freeze frame data. Review STFT and LTFT values. Negative LTFT past -10% confirms the rich condition.
Clean the MAF sensor with dedicated cleaner. Inspect boost pipe connections. Monitor the upstream O2 sensor; it should oscillate between 0.1V and 0.9V.
Repair Options and Cost Estimates
- MAF sensor cleaning or replacement: Cleaning under $10. New sensor $40-$140 plus $35-$85 labor.
- Boost leak repair: Parts $15-$60. Labor $55-$145.
- O2 sensor replacement: Parts $40-$135. Labor $55-$120.
- EVAP purge valve: Parts $20-$50. Labor $40-$85.
Can You Fix This Yourself?
MAF cleaning is easy. Boost hose inspection is simple. O2 sensor and EVAP valve replacement are moderate. The 2022 Rogue may still be under powertrain warranty, so check coverage first.
Prevention Tips
- Replace the air filter on schedule
- Use quality fuel
- Check boost connections periodically
- Run fuel system cleaner every 5,000 miles